Gin-saw



2 Sheets-Sheet 1.

(No Model.)

J. M. GARDNER. GIN SAW.

Patented Oct. 19,1897.

WITNESSES INVENTOR (No Model.) 1 2 SheetsSheet 2 J. M, GARDNER. GIN SAW.

I Patented Oct. 19,1897.

VI TNE SSE S l I I v the shaft-truing collars carried by theclamping-collars, for the purpose of straightening such as will enableothers skilled in the art to shaped slots provided on the saws, and alsoI rrED STATES- PATENT Fr es.

JEFFERSON M. GARDNER, OF NEW LONDON, CONNECTICUT.

GIN-SAW.

SPECIFICATION forming part of Letters Patent No. 592,137, dated October'19, 1897.

Application filed March 17, 1897.

To all whom it may concern:

Be itknown that I, JEFFERSON M. GARDNER, a citizen of the United States,residing at New London, in the) county of New London and State ofConnecticut, have invented certain new and useful Improvements inSaw-Cylinders for Cotton Linters and Gins; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,

which it appertains to make and use thesame.

This invention relates to saw-cylinders for cotton-seed linters andcotton-gins.

The object of my invention is to provide a cylinder in which the sawsare held in place in such manner as to permit of one being removedwithout disturbing any of the others, for the purpose of inserting a newsaw for one that is broken or worn out, to provide means for keeping thesaws in, true alinement both with each other and with the shaft, toprovide spacing blocks or rings of such construction as to subserve thedouble function of holding the saws at a proper distance apart, and alsofor locking the saws in operative position with relation to thecylinderand to each other, and, finally, to provide a saw-cylinder in which theparts may be taken apart and replaced by a person of ordinary ability,dispensing with the employment of skilled labor for the purpose.

In a saw-cylinder characterized by my invention I employ a shaft onwhich are arranged two collars constituting the saw-clampin g collars,one of these being loose, and'the other fixed, with relation to theshaft, and provide each with set-screws adapted to bear against theshaft when sprung. Secured between the two clamping-collars are aplurality of combined lockin'gand spacing rings, the same being providedwith a groove to fit on a spline carried by the shaft, so-that whenassembled these rings will be held from turning on said shaft. Each ringis provided, in this instance, with two studs or bosses extending atright angles to the face of the rim, and with two openings arrangedmidway between the studs, the function of the studs being to engagehook- Serial No- 628,028. (No model.)

for projecting through the openingsof the adj acent spa'cing-rin g,thereby more firmly holding the rings against rotation. I

The saws are each constructed of two parts, semicircular in shape, andprovided at their meeting edges each with a teat and a recess adapted toengage corresponding parts on the other section of the saw, and alsowith curved or hook-shaped slots or recesses for engaging the lugs onthe'spacing-rings, as before stated. When assembled, the lugs of thealternate spacing-rings will register, so that the junctures between themeeting edges of the saws are not in line, but are disposed at an angleof about ninety degrees with rela tion to each other, by whicharrangement the saws will be made to operate more effectively byavoiding bunching or gathering of the lint between the said meetingedges of the sawsections.

Further and more specific details of con-' struction will be hereinaftermore fully described.

In the accompanying drawings, forming a part of the specification, andin'which like lettersof reference indicate corresponding parts, Figure lis a view in sectional elevation, showing the parts assembled on theshaft. Fig. 2 is a view in elevation of one of the combined locking andspacing rings removed from the shaft. Fig. 3 is a sectional view takenon the line 3 3, Fig. 2, showing more particularly the construction ofthe spacing-ring. vFig. 4Eis a detail view of one of the clamping-ringsremoved from the shaft. Fig. 5 is a detail view of one of thesaw-sections, showing its peculiar construction.

Referring to the drawings, A designates the shaft, upon one end of whichis mounted a fixed collar a, and on the opposite end a collar ainteriorly threaded for engaging a threaded portion of the shaft, bywhich arrangement this latter collar may be moved to and from the fixedcollar. Each of the 'collars a and a respectively, are provided withset-screws a which are adapted to be projected beyond the inner face ofeach of the collars and into engagement with a shaft-truing collar a,carried by the inner face of each of the said collars a a as clearlyshown in Fig. 1.

Mounted on the shaft, between the collars a and a are a plurality ofcombined locking and spacing rings 13, comprising, each, a hub b, a rimb and spokes 7J connecting the hub to the rim, the parts being, bypreference, made integral. These spokes are, by preference, four innumber, and the two in opposite alinement are provided with studs Z2projecting at right angles to the face of the wheel, and the other pairwith openings b to be engaged by the studs b of the adjacent spacingring, as clearly shown in Fig. 1, this order being kept up throughoutthe entire series of rings, by which arrangement the entire number willbe securely held together against independent movement, a spline a onthe shaft engaging keyways Z) in the rings, serving to hold the lattereffectually against rotation. It is to be understood that this order maybe reversed-that is, that the rings may be provided with a spline andthe shaft with a keyway-and be made to operate satisfactorily. As shownin Fig. 3, the rim b of the lockingrings extends laterally beyond theface of the hub, so that when assembled this rim will bear firmlyagainst the saws to hold them in place.

The saws O are constructed in two parts, exactly duplicate in character,each being provided with a curved slot 0, with a teat c and with arecess 0 and when the sections of the saw are assembled the teats andrecesses of each section interlock, so as to prevent any lateral slidingof the sections, which would interfere with the continuity of theperiphery of the saw, while the curved slots 0 are adapted to be hookedaround the studs 0 as clearly shown in Fig. 2, and thereby hold the sawsin position with relation to the locking-rings.

\Vhen the parts are assembled, as shown in Fig. 1, the collar a istightened to clamp the saws securely between the locking rings. \Vhenthis is done, if it should be found that the shaft is sprung, it will beonly necessary to loosen certain of the set screws a and tighten suchothers as will bring about the springing back of the shaft to a trueline.

It is to be understood that the shaft A is of considerable length, sothat the truing of the same, by springing it back to line, as described,may be accomplished with readiness and case.

It will be observed that the disposition of the curved slots 0 of thesaw-sections are in the same general line with the trend of the teeth.The object of this arrangement is to from the head and inflicting damageto the I machine and injury to the operator.

It is to be understood that I do not limit myself to this exact form ofslot, as one more or less curved may be employed.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent of the United States, is

1. A saw-cylinder for cotton-seed linters and cotton-gins, comprising ashaft, a plurality of combined spacing and locking rings thereonprovided with outward -projecting lugs, saws having open-ended slotsengaging the lugs, and means for securing the saws between the saidrings, substantially as described.

2. A saw-cylinder for cotton-seed linters and cotton-gins, comprising ashaft, a plurality of combined spacing and locking rings thereon, heldfrom turning independently of the shaft, and provided withoutward-projecting lugs, saws having open-ended slots ongaging the lugs,and clamping-collars for securing the saws between the said rings,substantially as described.

3. A saw-cylinder for cotton-seed linters and cotton-gins, comprising ashaft, a plurality of combined spacing and locking rings thereon, heldfrom turning independently of the shaft, and provided withoutward-projecting lugs, sectional saws each having openended slotsengaging the lugs, and cla1npingcollars for securing the saws betweenthe said rings, substantially as described.

4. A saw-cylinder for cotton-seed linters and cotton-gins, comprising ashaft, two collars mounted thereon, one being fixed and the othermovable with relation to the shaft, spacing-rings mounted between thecollars and having a key connection with the shaft, said rings beingprovided with lugs or projections, and saws clamped between thespacingrings and having open-ended slots engaging the lugs,substantially as described.

5. A saw-cylinder for cotton-seed linters and cotton-gins, comprising ashaft having clamping-collars mounted thereon, one of which isstationary and the other movable with relation to the shaft, a pluralityof spacing-rings having a key connection with the shaft, said ringsbeing provided with lugs or projections, saws held in place between thesaid rings andhavingopen-ended slots engaging said lugs, shaft-truingcollars interposed between the clam ping-collars and the spacingrings ateach end of the cylinder, and setscrews carried by the clamping-collarsand adapted to be turned into engagement with the shaft-truing collars,substantially as described.

6; As a new article of manufacture, a saw for cotton-seed linters andcotton-gins, consisting of two sections, the meeting edges of eachsection of which are provided the one with a recess and the other with ateat and with a slot adjacent to one of the meeting edges, substantiallyas described.

7. As a new article of manufacture, a saw for cotton-seed linters andcotton-gins, consisting of two sections, the meeting edges of eachsection of which are provided the one with a recess and the other with ateat or projection and with a slot adjacent to one of the meeting edges,said slot extending substantially in the direction of the trend of thesawteeth, substantially as described.

8. As a new article of manufacture, a saw for cotton-seed linters andcotton-gins, consisting of two sections, the meeting edges of eachsection of which are provided the one with a recess and the other with ateat or projection and with a curved slot adjacent to one of the meetingedges, said curved-slot extending substantially in the direction of thetrend of the saw-teeth, substantially as described.

vided with openings, substantially as and for the purpose specified.

In testimony whereof I affix m signature in presence of two witnesses.

JEFFERSON M. GARDNER. Witnesses:

- E. H. PARRY,

R. M. ELLIOTT.

